1. Bell ringer # 4:
Calculate the percent by mass of solute in a solution made by g NaCl dissolved in 88 g water.
TIME’S UP!
START TIMER 5 4 1 3 2

2. Bell Ringer # 4:
Calculate the percent by mass of solute in a solution made by g NaCl dissolved in 88 g water.
Data:
Solute‘s mass =
3.55 g
Solution‘s mass =
3.55 g + 88g = g
% by mass = ?
% by mass =
x 100 =
x 100 =
3.87 %

3. ACTIVITIES:
Bell ringer # 4.
Solutions Concentrations II:
Molarity & Molality. (Class notes).
3) WS: Solutions Concentrations # 2.
4) Small Quiz: Molarity & Molality.
H.W. Online Quiz: “Solutions Concentrations # 2”.
Code: